IA-32 architecture
one byte opcodes




xxh  
x0h
 
x1h x2h x3h x4h x5h x6h x7h
 
0xh
 
ADD
Eb,Gb
ADD
Ev,Gv
ADD
Gb,Eb
ADD
Gv,Ev
ADD
AL,Ib
ADD
eAX,Iv
PUSH
ES
POP
ES
 
1xh
 
ADC
Eb,Gb
ADC
Ev,Gv
ADC
Gb,Eb
ADC
Gv,Ev
ADC
AL,Ib
ADC
eAX,Iv
PUSH
SS
POP
SS
 
2xh
 
AND
Eb,Gb
AND
Ev,Gv
AND
Gb,Eb
AND
Gv,Ev
AND
AL,Ib
AND
eAx,Iv
ES: DAA
 
3xh
 
XOR
Eb,Gb
XOR
Ev,Gv
XOR
Gb,Eb
XOR
Gv,Ev
XOR
AL,Ib
XOR
eAX,Iv
SS: AAA
 
4xh
 
INC
eAX
INC
eCX
INC
eDX
INC
eBX
INC
eSP
INC
eBP
INC
eSI
INC
eDI
 
5xh
 
PUSH
eAX
PUSH
eCX
PUSH
eDX
PUSH
eBX
PUSH
eSP
PUSH
eBP
PUSH
eSI
PUSH
eDI
 
6xh
 
PUSHA
PUSHAD
(80186+)
POPA
POPAD
(80186+)
BOUND
Gv,Ma
(80186+)
ARPL
Ew,Rw
(80286+)
FS:
(80386+)
GS:
(80386+)
OPSIZE:
(80386+)
ADSIZE:
(80386+)
 
7xh
 
JO
Jb
JNO
Jb
JB
Jb
JNB
Jb
JZ
Jb
JNZ
Jb
JBE
Jb
JNBE
Jb
 
8xh
 
group #1
Eb,Ib
group #1
Ev,Iv
group #1*
Eb,Ib
group #1
Ev,Ib
TEST
Eb,Gb
TEST
Ev,Gv
XCHG
Eb,Gb
XCHG
Ev,Gv
 
9xh
 
NOP
 
PAUSE (F3h)
(see CPUID)
XCHG
eCX,eAX
XCHG
eDX,eAX
XCHG
eBX,eAX
XCHG
eSP,eAX
XCHG
eBP,eAX
XCHG
eSI,eAX
XCHG
eDI,eAX
 
Axh
 
MOV
AL,Ob
MOV
eAX,Ov
MOV
Ob,AL
MOV
Ov,eAX
MOVSB
Yb,Xb
MOVSW/D
Yv,Xv
CMPSB
Yb,Xb
CMPSW/D
Yv,Xv
 
Bxh
 
MOV
AL,Ib
MOV
CL,Ib
MOV
DL,Ib
MOV
BL,Ib
MOV
AH,Ib
MOV
CH,Ib
MOV
DH,Ib
MOV
BH,Ib
 
Cxh
 
group #2
Eb,Ib

(80186+)
group #2
Ev,Ib

(80186+)
RET near
Iw
RET near LES
Gv,Mp
LDS
Gv,Mp
group #12
Eb,Ib
group #12
Ev,Iv
 
Dxh
 
group #2
Eb,1
group #2
Ev,1
group #2
Eb,CL
group #2
Ev,CL
AAM
Ib
AAD
Ib
SALC
SETALC
XLAT
 
Exh
 
LOOPNE
LOOPNZ
Jb
LOOPE
LOOPZ
Jb
LOOP
Jb
JCXZ
JECX
Jb
IN
AL,Ib
IN
eAX,Ib
OUT
Ib,AL
OUT
Ib,eAX
 
Fxh
 
LOCK: INT1
(ICEBP)
(80386+)
REPNE: REP:
REPE:
HLT CMC group #3
Eb
group #3
Ev

xxh  
x8h
 
x9h xAh xBh xCh xDh xEh xFh
 
0xh
 
OR
Eb,Gb
OR
Ev,Gv
OR
Gb,Eb
OR
Gv,Ev
OR
AL,Ib
OR
eAX,Iv
PUSH
CS
two byte
opcodes

(80286+)
 
1xh
 
SBB
Eb,Gb
SBB
Ev,Gv
SBB
Gb,Eb
SBB
Gv,Ev
SBB
AL,Ib
SBB
eAX,Iv
PUSH
DS
POP
DS
 
2xh
 
SUB
Eb,Gb
SUB
Ev,Gv
SUB
Gb,Eb
SUB
Gv,Ev
SUB
AL,Ib
SUB
eAX,Iv
CS:
 
Hint Not Taken
for Jcc (P4+)
DAS
 
3xh
 
CMP
Eb,Gb
CMP
Ev,Gv
CMP
Gb,Eb
CMP
Gv,Ev
CMP
AL,Ib
CMP
eAX,Iv
DS:
 
Hint Taken
for Jcc (P4+)
AAS
 
4xh
 
DEC
eAX
DEC
eCX
DEC
eDX
DEC
eBX
DEC
eSP
DEC
eBP
DEC
eSI
DEC
eDI
 
5xh
 
POP
eAX
POP
eCX
POP
eDX
POP
eBX
POP
eSP
POP
eBP
POP
eSI
POP
eDI
 
6xh
 
PUSH
Iv
(80186+)
IMUL
Gv,Ev,Iv
(80186+)
PUSH
Ib
(80186+)
IMUL
Gv,Ev,Ib
(80186+)
INSB
Yb,DX
(80186+)
INSW/D
Yv,DX
(80186+)
OUTSB
DX,Xb
(80186+)
OUTSW/D
DX,Xv
(80186+)
 
7xh
 
JS
Jb
JNS
Jb
JP
Jb
JNP
Jb
JL
Jb
JNL
Jb
JLE
Jb
JNLE
Jb
 
8xh
 
MOV
Eb,Gb
MOV
Ev,Gv
MOV
Gb,Eb
MOV
Gv,Ev
MOV
Ew,Sw
LEA
Gv,M
MOV
Sw,Ew
group #10
 
9xh
 
CBW
(8088)
CBW/CWDE
(80386+)
CWD
(8088)
CWD/CDQ
(80386+)
CALL
Ap
WAIT
FWAIT
PUSHF
Fv
POPF
Fv
SAHF LAHF
 
Axh
 
TEST
AL,Ib
TEST
eAX,Iv
STOSB
Yb,AL
STOSW/D
Yv,eAX
LODSB
AL,Xb
LODSW/D
eAX,Xv
SCASB
Yb,AL
SCASW/D
Yv,eAX
 
Bxh
 
MOV
eAX,Iv
MOV
eCX,Iv
MOV
eDX,Iv
MOV
eBX,Iv
MOV
eSP,Iv
MOV
eBP,Iv
MOV
eSI,Iv
MOV
eDI,Iv
 
Cxh
 
ENTER
Iw,Ib
(80186+)
LEAVE
(80186+)
RET far
Iw
RET far INT3 INT
Ib
INTO IRET
 
Dxh
 
ESC
0
ESC
1
ESC
2
ESC
3
ESC
4
ESC
5
ESC
6
ESC
7
 
Exh
 
CALL
Jv
JMP
Jv
JMP
Ap
JMP
Jb
IN
AL,DX
IN
eAX,DX
OUT
DX,AL
OUT
DX,eAX
 
Fxh
 
CLC STC CLI STI CLD STD group #4
INC/DEC
group #5
INC/DEC etc.



note: The opcodes marked with * are aliases to other opcodes.



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